Apple Power Macintosh G4 400 (PCI) Specs (M7631LL/A)
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The Apple Power Macintosh G4/400 (PCI Graphics), based on the Yikes! architecture, features a 400 MHz PowerPC 7400 (G4) processor with the AltiVec "Velocity Engine" vector processing unit and 1 MB of backside cache. It shipped configured with 64 MB of RAM, a 10 GB Ultra ATA/33 hard drive, a 32X CD-ROM drive, and an ATI Rage 128 graphics card with 16 MB of SDRAM.
On October 13, 1999, a mere two weeks after introduction -- due to Motorola's inability to provide sufficient numbers of PowerPC 7400 (G4) processors -- Apple quickly, and infamously, "reconfigured" or "speed dumped" this model -- replacing it with the Power Macintosh G4/350 (PCI Graphics), and introducing the Power Macintosh G4/400 (AGP Graphics) and a revised configuration of the Power Macintosh G4/450 (AGP Graphics).
The Power Macintosh G4/400 (PCI Graphics) uses a case design effectively the same as that introduced with the Power Macintosh G3 (Blue & White) -- complete with a fold down door on the side that makes upgrading very easy -- but is clad in a more conservative "graphite" and white color scheme. Custom configurations also were available.
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Click on the underlined category text for related details. The most commonly needed info is "open" by default, but all info is important.
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| Introduction Date: |
August 31, 1999 |
Discontinued Date: |
October 13, 1999* |
| Details: |
The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" generally refers to the date a model either was replaced by a subsequent system or production otherwise ended.
*The lifespan of this model was cut short by Motorola's inability to provide sufficient numbers of PowerPC 7400 (G4) processors, causing Apple to quickly, and infamously, "reconfigure" or "speed dump" this model -- replacing it with the Power Macintosh G4/350 (PCI Graphics), and introducing the Power Macintosh G4/400 (AGP Graphics) and a revised configuration of the Power Macintosh G4/450 (AGP Graphics). |
| Processor Type: |
PowerPC 7400 (G4) |
Processor Speed: |
400 MHz |
| Details: |
The PowerPC G4 includes the AltiVec "Velocity Engine" vector processor. |
| Processor Upgrade: |
ZIF Socket |
FPU: |
Integrated |
| Details: |
The Power Macintosh G4 (PCI Graphics) models have the processor mounted on a ZIF socket. |
| System Bus Speed: |
100 MHz |
Cache Bus Speed: |
200 MHz |
| Details: |
This system has a 200 MHz backside bus and 1 MB of level 2 cache. |
| ROM/Firmware Type: |
Open Firmware |
ROM/Firmware Size: |
1 MB |
| Details: |
Boot ROM and around 1 MB, other instructions are loaded into RAM (NewWorld). |
| L1 Cache: |
64k |
L2/L3 Cache: |
1 MB (backside) |
| Details: |
The 1 MB of backside cache has a 200 MHz bus. |
| RAM Type: |
PC100 SDRAM |
Min. RAM Speed: |
100 MHz |
| Details: |
Officially supports 100 MHz PC100 SDRAM (3.3v, unbuffered, 64-bit-wide, 168-pin), but PC133 SDRAM is backwards compatible and may be used as well. |
| Standard RAM: |
64 MB |
Maximum RAM: |
1.0 GB |
| Details: |
Installed as a single 64 MB module. There is no performance advantage to installing memory modules in pairs.
Site sponsor Other World Computing sells Power Macintosh G4 processors and memory, as well as hard drives, accessories, and other upgrades. |
| Motherboard RAM: |
None |
RAM Slots: |
4 |
| Details: |
There is no performance advantage to installing memory modules in pairs. |
| Video Card: |
Rage 128 |
VRAM Type: |
SDRAM |
| Details: |
The ATI Rage 128 graphics card with 16 MB of SDRAM occupies a 66 MHz PCI slot. |
| Standard VRAM: |
16 MB |
Maximum VRAM: |
16 MB |
| Display Support: |
Single Display |
Resolution Support: |
1600x1200 |
| Details: |
Apple advertised that this system can support "up to 1600 by 1200 pixel resolution at 32 bits per pixel (millions of colors) and up to 85-Hz refresh rate." |
| 2nd Display Support: |
None |
2nd Max. Resolution: |
N/A |
| Standard Hard Drive: |
10 GB (5400 RPM) |
Int. HD Interface: |
Ultra ATA/33 (ATA-4) |
| Details: |
Can officially support two Ultra ATA/33 hard drives on the original bus (more drives can be supported with a third-party controller PCI card) -- drives larger than 128 GB are not natively supported. Ultra ATA/100 hard drives are backwards compatible with the Ultra ATA/33 standard.
It also could be configured with up to three Ultra2 SCSI drives at the time of purchase as a build-to-order option. |
| Standard Optical: |
32X CD-ROM |
Standard Disk: |
None* |
| Details: |
The 32X CD-ROM drive uses a EIDE (ATA-3) bus. Optional 5X DVD-ROM or DVD-RAM drives were available build-to-order.
*By default, this model shipped without a disk drive, but it could be configured with an internal Zip 100 drive as a build-to-order option. |
| Standard Modem: |
56k |
Standard Ethernet: |
10/100Base-T |
| Details: |
Internal modem and 10/100Base-T Ethernet standard. |
| Standard AirPort: |
None |
Standard Bluetooth: |
None |
| USB Ports: |
2 (1.1) |
Firewire Ports: |
2 (400) |
| Details: |
USB 1.1 ports share a single channel.
Also see: Complete Ports. |
| Expansion Slots: |
3 PCI* |
Expansion Bays: |
5 3.5" |
| Details: |
*In the default configuration, this model has three open 33 MHz PCI slots and a 66 MHz PCI slot occupied by the graphics card.
It has five 3.5" drive bays (four are internal and intended for hard drives, and one is external and intended for a Zip 100 drive). By default, with a single drive installed, three internal 3.5" bays are free as is the external 3.5" bay. The system also has an external 5.25" drive bay occupied by the optical drive. |
| Incl. Keyboard: |
Apple USB Keyboard |
Incl. Input: |
Apple USB Mouse |
| Case Type: |
Tower |
Form Factor: |
Power Mac G4 (Graphite) |
| Apple Model No: |
M7631LL/A |
Apple Subfamily: |
Power Mac G4 - PCI |
| Details: |
The Apple model number should be unique to this system. |
| Gestalt/Model ID: |
N/A |
Machine Model: |
PowerMac1,2 |
| Details: |
Please note that these identifiers refer to more than one model. |
| Battery Type: |
3.6V Lithium |
Battery Life: |
N/A |
| Pre-Installed MacOS: |
8.6 |
Maximum MacOS: |
X 10.4.11 |
| Details: |
Please note that this system cannot run versions of MacOS X more recent than 10.4.11. |
| MacOS 9 Support: |
Boot/Classic Mode |
Windows Support: |
Emulation Only |
| Details: |
This Power Macintosh G4 model is capable of booting MacOS 9 and using MacOS 9 applications within the MacOS X "Classic" environment.
Site sponsor OHS specializes in heavily upgraded Macs capable of running both MacOS X and MacOS 9 applications. |
| Dimensions: |
17.0 x 8.9 x 18.4 |
Avg. Weight: |
30.0 lbs. (13.6 kg) |
| Details: |
In inches - height by width by depth, (43.2 cm, 22.6 cm, 46.7 cm). |
| Original Price: |
US$1599 |
Est. Current Retail: |
US$80-US$125 |
| Details: |
Please note that on average the estimated current retail pricing of used systems is updated twice a year (please refer to the date on the bottom of the page for the date last updated).
Photo Credit: Apple Computer. |
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